Heat-insulating dark cool-feeling textile and dark cool-feeling fiber thereof

ABSTRACT

A heat-insulating dark cool-feeling textile and a dark cool-feeling fiber thereof are provided. The dark cool-feeling fiber is formed by adding to the fiber nano microparticles which account for 0.05-5 wt % of the total weight of the textile fiber. The particle size of the nano microparticles is 300-1,800 nm, and the material of the nano microparticles is selected from two or more of iron, copper, nickel, cobalt, and chromium. The dark cool-feeling fiber is suitable for knitting or weaving to obtain a heat-insulating dark cool-feeling textile.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims the benefit of priority to Taiwan Patent Application No. 107147004, filed on Dec. 25, 2018. The entire content of the above identified application is incorporated herein by reference.

Some references, which may include patents, patent applications and various publications, may be cited and discussed in the description of this disclosure. The citation and/or discussion of such references is provided merely to clarify the description of the present disclosure and is not an admission that any such reference is “prior art” to the disclosure described herein. All references cited and discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference was individually incorporated by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a textile and a textile fiber, and in particular, to a heat-insulating dark cool-feeling textile and a dark cool-feeling fiber thereof.

BACKGROUND OF THE DISCLOSURE

The cool-feeling effect of a conventional textile fiber and textile is produced by adding mineral powders or jade powders with low specific heat or by silking in a profiled section to increase the heat conduction performance thereof. For example, cool-feeling textile fiber Acotex Gpowertech Co., Ltd. emphasizes that when a person wearing clothes with the cool-feeling textile fiber technology ACOTEX® enters an air-conditioned room from the outside, the clothes made of material with low specific heat can achieve an instant cool feeling effect. However, when being outside in the sun, the person wearing the clothes with the cool-feeling textile fiber technology ACOTEX® would feel hotter due to the low specific heat of the material of the clothes.

In addition, some conventional fibers use textile materials with good water absorption such as cotton, viscose rayon, cuprammonium rayon, or hydrophilized synthetic fibers to obtain an instant cool feeling. In such a case, no heating effect is caused even under high temperature environments. However, the disadvantage of such conventional fibers is that after a large amount of water is absorbed, such fibers do not dry easily due to the excellent moisturizing effect thereof. If a person wearing such clothes enters an air-conditioned room after exercise, since the clothes have absorbed a large amount of sweat, the wet clothes can instantly become cold and cause the person to catch a cold.

SUMMARY OF THE DISCLOSURE

To solve the foregoing problems of the prior art, the main objective of the present disclosure is to provide a heat-insulating dark cool-feeling textile and a dark cool-feeling fiber thereof, which allow the fiber to have good near-infrared light reflectivity and heat-insulating effect in a dark state, achieve low costs, and be easily manufactured.

To achieve the foregoing objective, one of the main objectives of the present disclosure is to provide a dark cool-feeling fiber, wherein the textile fiber includes one or more of artificial fibers and synthetic fibers. In addition, 0.05-5 wt % (weight percentage) of nano microparticles is added based on the total weight of the textile fiber to improve the near-infrared light reflectivity and dark color effect of the textile fiber. The nano microparticles are a mixture of any two or more selected from iron (Fe), copper (Cu), nickel (Ni), cobalt (Co), and chromium (Cr) with the particle size of 300-1,800 nm. Preferably, 0.1-3 wt % of nano microparticles with the particle size of 500-1,500 nm is added based on the total weight of the textile fiber. More preferably, 0.3-1.5 wt % of nano microparticles with the particle size of 700-1,300 nm is added based on the total weight of the textile fiber. Specific examples of the nano microparticles include at least one of the following combinations:

-   1) 5-300 parts by weight of Fe and 5-200 parts by weight of Cr; -   2) 5-300 parts by weight of Fe and 5-200 parts by weight of Ni; -   3) 5-300 parts by weight of Cu and 5-300 parts by weight of Ni; -   4) 10-150 parts by weight of Fe and 10-100 parts by weight of Cr; -   5) 10-150 parts by weight of Fe and 10-100 parts by weight of Ni; or -   6) 10-150 parts by weight of Cu and 10-150 parts by weight of Ni.

Another objective of the present disclosure is to provide a heat-insulating dark cool-feeling textile, obtained by knitting or weaving the dark cool-feeling fiber of the present invention. The heat-insulating dark cool-feeling textile has a heat-insulating effect of about 12° C. and the near-infrared light reflectivity of 50%-80% compared with a generic black fabric.

The beneficial effects of the dark cool-feeling fiber and the textile prepared therefrom of the present invention include: a certain ratio of nano microparticles with the particle size of 500-1,500 nm is added to the textile fiber, so that compared with a textile of the same gram weight, color and weaving method, the dark cool-feeling fiber of the present disclosure has greatly improved near-infrared light reflectivity and heat insulation property of the textile. In particular, compared with the existing dark heat-insulating fibers, the present disclosure is low in manufacturing cost, simple in manufacturing process, and easy to industrialize.

For a further understanding of the features and the technical content of the present disclosure, reference is made to the detailed description and accompanying drawings of the present disclosure. However, the accompanying drawings are merely provided for reference and description, and are not intended to limit the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing a detection test of the heat-insulating capability in Examples 1 and 2 of the present disclosure.

FIG. 2 shows a comparison of the results of near-infrared light reflectivity detection of a test sample and a generic black fabric in Example 1.

FIG. 3 shows a comparison of the results of near-infrared light reflectivity detection of a test sample and a generic black fabric in Example 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The dark cool-feeling fiber of the present disclosure is a textile fiber having both heat insulation and cool feeling functions. 0.05-5 wt % of nano microparticles is added in the textile fiber based on the total weight of the textile fiber, and the nano microparticles are a mixture of any two or more selected from Fe, Cu, Ni, Co, and Cr with the particle size of 300-1,800 nm. Preferably, 0.1-3 wt % of nano microparticles with the particle size of 700-1,300 nm is added, to improve the near-infrared light reflectivity and dark color effect of the textile fiber.

The textile fiber includes one or more of artificial fibers and synthetic fibers.

In the dark cool-feeling fiber of the present disclosure, the nano microparticles may be added by using a conventional melt spinning technique. A preparation method of the dark cool-feeling fiber of the present disclosure includes the following steps.

A. A predetermined ratio of the nano microparticles is prepared into a heat-insulating cool-feeling master batch with a natural polymer material or a synthetic polymer material. For example, Fe and Cr having a weight ratio of 24:1 are prepared into a heat-insulating cool-feeling master batch with the natural polymer material or the synthetic polymer material.

B. The prepared heat-insulating cool-feeling master batch is uniformly mixed with another polymer material master batch or synthetic polymer material master batch.

C. The mixture is subjected to screw mixing and then extruded through a spinning mechanism, to obtain a dark cool-feeling fiber.

Hereinafter, the dark cool-feeling fiber of the present disclosure is processed into a fiber-fabric product and a fabric as an illustrative example, and the heat insulation property is evaluated according to the following method.

1. Lamp Box Test (Heat-Insulating Effect Test):

Referring to FIG. 1, according to the nano-label TN-037 specification, one of two fabric samples is a standard sample, and the other is a test sample, where the temperature of the standard sample is controlled at 46° C.±2° C. The standard sample and the test sample are respectively placed on a left semicircular tube and a right semicircular tube in the lamp box, and are simultaneously irradiated with a 175 W infrared lamp for 10 min to observe the temperature difference.

Required level: the temperature difference is +2° C. or more, which indicates that there is a heat-insulating effect.

2. Color Test:

The color of the fabric is tested with a spectrophotometer (model: X-rite Color-Eye 70000A).

3. Near-Infrared Light Reflectivity Detection:

The near-infrared light reflectivity of the fiber products and fabrics is tested with a UV/Vis/NIR spectrometer (model: Lambda 750 manufactured by Perkin Elmer). The fabric sample is folded into 16 layers for testing, in order to avoid the influence of fiber density of the products and fabrics on the accuracy of near-infrared light reflectivity measurement.

Experimental method: the fabric sample is folded into a 16-layer structure, and the reflectivity of the sample in the wavelength range of 200 nm to 2,500 nm is measured by a UV-Vis spectrometer to observe the reflecting capacity of the fabric sample in near-infrared light (780-2,500 nm).

EXAMPLE 1

In the dark cool-feeling fiber prepared in this example, 0.3 wt % of nano microparticles is added to the textile fiber based on the total weight of the textile fiber by using a melt spinning technique, and the nano microparticles have the particle size of about 700 nm and include 32 parts by weight of Fe and 32 parts by weight of Cr, as well as other trace elements that need to be added.

Control samples of this example:

1. Sample A: a generic black yarn prepared by adding 4.5 wt % of a black master batch is used as a control sample, where the black master batch is prepared by adding 30 wt % of carbon black to a PET resin.

2. Sample B: a generic black yarn prepared by adding 7.0 wt % of a black master batch is used as a control sample, where the black master batch is prepared by adding 30 wt % of carbon black to a PET resin.

The heat-insulating effect and color of the obtained fiber and the control samples are tested, and the results are shown in Tables 1 and 2. The results of near-infrared light reflectivity detection are shown in FIG. 2.

TABLE 1 Measured data of heat-insulating capability in Example 1 Temperature Item Test sample Control sample difference Δ° C. Experiment 1 Example 1 Generic black yarn 12.2° C. (4.5%) 48.8° C. 61.0° C. Experiment 2 Example 1 Generic black yarn 14.1° C. (7.0%) 48.6° C. 62.7° C.

TABLE 2 Measured data of color in Example 1 Generic black Generic black Item Example 1 (4.5%) (7.0%) Color Black Black Black L* 15.71 15.98 13.02 a* 0.52 0.58 0.15 b* 1.25 1.52 0.27

It can be observed from the test results of Table 1 that under the same gram weight, color and weaving method, compared with the generic black fabric, the heat insulation property of the textile prepared in this example can isolate a heat source and reduce the temperature of the fabric by about 12° C.

According to the test results of Table 2, the textile prepared in this example has only a small difference in the L*, a*, and b* values from the generic black fabric, and the color display under the naked eye is substantially black.

According to the near-infrared light reflectivity detection of FIG. 2, the near-infrared light (780-1,300 nm) reflectivity and heat-insulating capability of the textile prepared in this example are about 50-85%, and the near-infrared light (780-1,300nm) reflectivity and heat-insulating capability of samples A and B of the generic black fabric are only about 4-6%. Apparently, the fiber textile prepared by the present disclosure has higher near-infrared light reflectivity than the generic black fabric.

EXAMPLE 2

The dark cool-feeling fiber is prepared in the same method as Example 1, but the nano microparticles with the particle size of about 1,300 nm are used in the textile fiber and include 32 parts by weight of Fe and 32 parts by weight of Cr, as well as other trace elements that need to be added.

Similarly, samples A and B of Example 1 are used as control samples of this example. The heat-insulating effect and color of the prepared fiber and control samples are tested, and the results are shown in Tables 3 and 4. The results of near-infrared light reflectivity detection are shown in FIG. 3.

TABLE 3 Measured data of heat-insulating capability in Example 2 Temperature Item Test sample Control sample difference Δ° C. Experiment 3 Example 2 Generic black yarn 12.6° C. (4.5%) 48.6° C. 61.2° C. Experiment 4 Example 2 Generic black yarn 14.2° C. (7.0%) 48.7° C. 62.9° C.

TABLE 4 Measured data of color in Example 2 Generic black Generic black Item Example 2 (4.5%) (7.0%) Color Black Black Black L* 15.69 15.98 13.02 a* 0.60 0.58 0.15 b* 1.09 1.52 0.27

It can be seen from the test results of Table 3 that under the same gram weight, color and weaving method, compared with the generic black fabric, the heat insulation property of the textile prepared by the textile fibers of the present disclosure can isolate a heat source and reduce the temperature of the fabric by about 12° C.

According to the test results of Table 4, the textile prepared by the fiber of the present disclosure has only a small difference in the L*, a*, and b* values from the generic black fabric, and the color display under the naked eye is substantially black.

According to the near-infrared light reflectivity detection of FIG. 3, the near-infrared light (780-1,600 nm) reflectivity and heat-insulating capability of the textile prepared in this example are about 55-85%, and the near-infrared light (780-1,600nm) reflectivity and heat-insulating capability of samples A and B of the generic black fabric are only about 4-6%. Apparently, the fiber textile prepared by the present disclosure has higher near-infrared light reflectivity than the generic black fabric.

EXAMPLE 3

The dark cool-feeling fiber is prepared in the same method as Example 1, but the nano microparticles used in the textile fiber include 32 parts by weight of Fe and 32 parts by weight of Ni, as well as other trace elements that need to be added.

Similarly, samples A and B of Example 1 are control samples of this example. Compared with the generic black fabric, the heat-insulating effect is still about 12° C., and the near-infrared light reflectivity is 50-80%.

The contents above are only preferred feasible embodiments of the present disclosure, and are not intended to limit the protection scope of the claims of the present disclosure. Therefore, any equivalent technical changes made according to the description and the accompanying drawings of the present disclosure fall within the protection scope of the claims of the present disclosure. 

What is claimed is:
 1. A dark cool-feeling fiber, characterized in that nano microparticles are added to the textile fiber, and account for 0.05-5 wt % of the total weight of the textile fiber; the textile fiber comprises one or more of artificial fibers and synthetic fibers; the particle size of the nano microparticles is 300-1,800 nm, and the material of the nano microparticles is selected from two or more of iron, copper, nickel, cobalt, and chromium.
 2. The dark cool-feeling fiber according to claim 1, wherein the nano microparticles account for 0.1-3 wt % of the total weight of the textile fiber, and the particle size of the nano microparticles is 500-1,500 nm.
 3. The dark cool-feeling fiber according to claim 1, wherein the nano microparticles account for 0.3-1.5 wt % of the total weight of the textile fiber, and the particle size of the nano microparticles is 700-1,300 nm.
 4. The dark cool-feeling fiber according to claim 1, wherein the nano microparticles include at least one of the following combinations: 1) 5-300 parts by weight of iron and 5-200 parts by weight of chromium; 2) 5-300 parts by weight of iron and 5-200 parts by weight of nickel; or 3) 5-300 parts by weight of copper and 5-300 parts by weight of nickel.
 5. The dark cool-feeling fiber according to claim 2, wherein the nano microparticles include at least one of the following combinations: 1) 5-300 parts by weight of iron and 5-200 parts by weight of chromium; 2) 5-300 parts by weight of iron and 5-200 parts by weight of nickel; or 3) 5-300 parts by weight of copper and 5-300 parts by weight of nickel.
 6. The dark cool-feeling fiber according to claim 3, wherein the nano microparticles include at least one of the following combinations: 1) 5-300 parts by weight of iron and 5-200 parts by weight of chromium; 2) 5-300 parts by weight of iron and 5-200 parts by weight of nickel; or 3) 5-300 parts by weight of copper and 5-300 parts by weight of nickel.
 7. The dark cool-feeling fiber according to claim 1, wherein the nano microparticles include at least one of the following combinations: 1) 10-150 parts by weight of iron and 10-100 parts by weight of chromium; 2) 10-150 parts by weight of iron and 10-100 parts by weight of nickel; or 3) 10-150 parts by weight of copper and 10-150 parts by weight of nickel.
 8. The dark cool-feeling fiber according to claim 2, wherein the nano microparticles include at least one of the following combinations: 1) 10-150 parts by weight of iron and 10-100 parts by weight of chromium; 2) 10-150 parts by weight of iron and 10-100 parts by weight of nickel; or 3) 10-150 parts by weight of copper and 10-150 parts by weight of nickel.
 9. The dark cool-feeling fiber according to claim 3, wherein the nano microparticles include at least one of the following combinations: 1) 10-150 parts by weight of iron and 10-100 parts by weight of chromium; 2) 10-150 parts by weight of iron and 10-100 parts by weight of nickel; or 3) 10-150 parts by weight of copper and 10-150 parts by weight of nickel.
 10. A heat-insulating dark cool-feeling textile, wherein the heat-insulating dark cool-feeling textile is obtained by knitting or weaving the dark cool-feeling fiber provided as claimed in claim
 1. 